C#

public class MyData
{
    protected string myText;
    public event EventHandler MyTextChanged;

    public string MyText
    {
        get {return myText;}
        set
        {
            myText=value;
            if (MyTextChanged != null)
            {
                MyTextChanged(this, EventArgs.Empty);
            }
        }
    }

    public MyData()
    {
        myText="Initial Value";
    }
}

private void Download()
{
   int cycle = 5; // 4 + 1 for the first time
   while (cycle-- > 0)
   {
     // Do the job.
   }
}

int[] MyArrayOfInts = ...<br />
<br />
fixed(int* p_MyArrayOfInts = MyArrayOfInts) <br />
{<br />
   ThatFunction(p_MyArrayOfInts);<br />
}

lResult = SendMessage( // returns LRESULT in lResult<br />
  (HWND) hWndControl, // handle to destination control<br />
  (UINT) HDM_GETORDERARRAY, // message ID<br />
  (WPARAM) wParam, // = (WPARAM) (int) iSize;<br />
  (LPARAM) lParam // = (LPARAM) (LPINT) lpiArray;<br />
);

int[] MyArrayOfInts = ...<br />
<br />
fixed(int* p_MyArrayOfInts = MyArrayOfInts) <br />
{<br />
   ThatFunction(*p_MyArrayOfInts); // not:  ThatFunction(p_MyArrayOfInts);<br />
}